I have the 2 rubber rings on the bottom yoke and a single one on the top. I am sure both yoke bearings are fully home, yet there is still about 5mm space on the headlight bracket. Is there some other mounting system using larger rubber grommets of some sort? I can't imagine a previous owner shortened the brackets, but can someone pls tell me the length of the brackets, and the distance between the yokes (MKIII yoke and frame)?
Headlamp bracket too short?
- Thread starter GraemeH
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marshg246
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If using all the right parts, and the bearings are touching the spacer tube then there won't be a gap. Also, the fork ear you have installed is upside down which has nothing to do with your problem. Most likely, you don't have the bottom yoke up against the bearing or you don't have the washer (06.7685) and head lug dust cover (06-7651) down against the top bearing.
When installing, both fork ears must be in place and the headlight shell secured between them because once everything is tightened, the fork ears will not move and if you force them you will destroy the O-rings.
As @L.A.B says that top yoke does not look right - more pictures would help.
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No it isn't. The slot is horizontal which is correct.
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No, all 850 are ANG.
The Mk3 upper yoke should have two threaded bosses for the console and brake line bracket.
Andover Norton - TOP YOKE complete with STEM (850 MKIII) - 06.6649
TOP YOKE complete with STEM (850 MKIII)
andover-norton.co.uk
The Mk3 top yoke is ANG 065721. This is the casting number not the part number.
The upper tube (on the right) should measure 42mm from the plate, yours does not seem to be.
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ANG 064084 is the casting number for the pre-Mk3 064080 850 top yoke.
Andover Norton - UPPER YOKE complete with STEM 850 (
UPPER YOKE complete with STEM 850 (
andover-norton.co.uk
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Your head steady in the first pic is the weak 750 version prone to cracking, the 850 version was a boxed in design that did not crack. But you could equally upgrade to the heim joint Taylor or other versions which help further with the handling. You will need to check the top yoke and its steering lock engages properly as the MK3 frame has a different tab on the front of the steering stem for the steering lock.
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But the problem has already been identified as the bracket tubes being too short (180mm instead of 188mm).
